Title

Photoproduction of K+K- meson pairs on the proton

Authors

S. Lombardo, Indiana University Bloomington
M. Battaglieri, Istituto Nazionale di Fisica Nucleare, Sezione di Genova
A. Celentano, Istituto Nazionale di Fisica Nucleare, Sezione di Genova
A. D'Angelo, Istituto Nazionale di Fisica Nucleare - INFN
R. De Vita, Istituto Nazionale di Fisica Nucleare, Sezione di Genova
A. Filippi, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
D. I. Glazier, University of Glasgow
S. M. Hughes, The University of Edinburgh
V. Mathieu, Indiana University Bloomington
A. Rizzo, Istituto Nazionale di Fisica Nucleare - INFN
E. Santopinto, Istituto Nazionale di Fisica Nucleare, Sezione di Genova
I. Stankovic, The University of Edinburgh
A. P. Szczepaniak, Indiana University Bloomington
D. Watts, The University of Edinburgh
L. Zana, The University of Edinburgh
S. Adhikari, Florida International University
Z. Akbar, Florida State University
H. Avakian, Thomas Jefferson National Accelerator Facility
J. Ball, Universite Paris-Saclay
N. A. Baltzell, University of South Carolina
L. Barion, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
M. Bashkanov, The University of Edinburgh
V. Batourine, Kyungpook National University
I. Bedlinskiy, Alikhanov Institute for Theoretical and Experimental Physics
A. S. Biselli, Carnegie Mellon University
S. Boiarinov, Thomas Jefferson National Accelerator Facility
W. J. Briscoe, The George Washington University
V. D. Burkert, Thomas Jefferson National Accelerator Facility
F. Cao, University of Connecticut
T. Chetry, Ohio University
G. Fedotov, Ohio University
K. Hicks, Ohio University

Document Type

Article

Publication Date

9-27-2018

Abstract

© 2018 authors. Published by the American Physical Society. The exclusive reaction γp→pK+K- was studied in the photon energy range 3.0-3.8 GeV and momentum transfer range 0.6<-t<1.3 GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. In this kinematic range the integrated luminosity was approximately 20 pb-1. The reaction was isolated by detecting the K+ and the proton in CLAS, and reconstructing the K- via the missing-mass technique. Moments of the dikaon decay angular distributions were extracted from the experimental data. Besides the dominant contribution of the φ meson in the P wave, evidence for S-P interference was found. The differential production cross sections dσ/dt for individual waves in the mass range of the φ resonance were extracted and compared to predictions of a Regge-inspired model. This is the first time the t-dependent cross section of the S-wave contribution to the elastic K+K- photoproduction has been measured.

Share

COinS